Today I published my first Android (Wear) App! . The idea behind this clock is that it uses concentric circles to show time, and doesn't use analog clock hands or numeric time notation.
This is something I have on a bigger LCD screen at home for a while now, and now that there is Android Wear for a while, I wanted to implement this for Android.

Some example visualizations

Android Watch Face

WebGL from the Website

You need to have WebGL support in your browser in order to see the following live-clock.

Some comments on Android Wear development

Android Wear is relatively new, and I never read any book on the Android Framework. Luckily I had some Java experience.
Overall I am impressed by the design of the Framework, although it also confused the hell out of me on various occasions @:|@.

Some stuff I needed to realize or discover during development:

(Very basic:) an Activity only runs when it's the current activity.

If you need stuff running for longer than an Activity, you need Services.

In Java you don't have RAII like in C++/PHP. If you have handlers for threads etc. you should stop them in some onDestroy() method.

Packaging, creating the APK for use in f.i. the Play Store was counter intuitive, at least for me. Follow the example project provided by Google closely in your project w/respect to Gradle files.
I had a perfectly good working APK that came out of Android Studio, it worked whenever I sent it to others, but it was not accepted by the Play store.

There is already OpenGL support for Watch Faces. You need to extend Gles2WatchFaceService.